Water temperature in Crystal Lake (IL) in December
Is it warm enough to swim in Crystal Lake in December? Average water temperature in Crystal Lake in December is 37.8°F and therefore is not suitable for comfortable swimming. The warmest water in Crystal Lake in December is 42.8°F, and the coldest is 33.8°F. To find out the water temperature today and in the coming days, go to Current water temperature in Crystal Lake
Changes water temperature in Crystal Lake in December 2025, 2024
To get an accurate forecast for the water temperature in Crystal Lake for any chosen month, compare two years within a 10 year range using the chart below.
You can choose any other years:
| Day | 2025 | 2024 |
|---|---|---|
| December 1 | 39.2°F | |
| December 2 | 39.2°F | |
| December 3 | 39.2°F | |
| December 4 | 39.2°F | |
| December 5 | 39.2°F | |
| December 6 | 39.2°F | 39.2°F |
| December 7 | 39.2°F | 37.4°F |
| December 8 | 37.4°F | 37.4°F |
| December 9 | 37.4°F | 37.4°F |
| December 10 | 37.4°F | 37.4°F |
| December 11 | 37.4°F | 37.4°F |
| December 12 | 37.4°F | 37.4°F |
| December 13 | 35.6°F | 35.6°F |
| December 14 | 35.6°F | 35.6°F |
| December 15 | 33.8°F | 35.6°F |
| Day | 2025 | 2024 |
|---|---|---|
| December 16 | 33.8°F | 35.6°F |
| December 17 | 33.8°F | 35.6°F |
| December 18 | 35.6°F | |
| December 19 | 35.6°F | |
| December 20 | 35.6°F | |
| December 21 | 35.6°F | |
| December 22 | 33.8°F | |
| December 23 | 33.8°F | |
| December 24 | 33.8°F | |
| December 25 | 33.8°F | |
| December 26 | 33.8°F | |
| December 27 | 33.8°F | |
| December 28 | 33.8°F | |
| December 29 | 35.6°F | |
| December 30 | 35.6°F | |
| December 31 | 35.6°F |
Crystal Lake water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
